Osama Hamdy

Associate Professor, Department of Medicine, Harvard Medical School

Senior Staff Physician and Director of Obesity Clinical Program, Endocrine Division, Department of Medicine, Joslin Diabetes Center

Clinical Investigator, Endocrine Division, Clinical and Behavioral Research, Joslin Diabetes Center

Osama Hamdy, MD, PhD is a world expert and recognized thought leader in obesity, nutrition, and diabetes technology. Dr. Hamdy is a senior endocrinologist and Medical Director of the Joslin Obesity Clinical Program and Director of the International Medical Affairs at Joslin Diabetes Center, and Associate Professor of Medicine at Harvard Medical School. Dr. Hamdy is very active in nutrition and obesity clinical research. His lab led to many innovations and discoveries that changed how we currently manage obesity in patients with either type 2 or type 1 diabetes and were incorporated in National and International Guidelines.

Dr. Hamdy research led to the first landmark discovery that 7% weight loss in obese patients with and without diabetes significantly improve vascular endothelial function, insulin sensitivity and markers of inflammation. Dr. Hamdy was a co-investigator in two US landmark studies: the “Diabetes Prevention Program” and “the Look AHEAD Study”. In 2005, Dr. Hamdy founded the “Weight Achievement and Intensive Treatment (Why WAIT) program, which is currently implemented nationally and internationally. He also found the Diabetes Remission Outcome Program (DROP) that helped newly diagnosed patients with diabetes within 5 years to get remission from the disease and stop medications. Dr. Hamdy co-chaired the task force that developed the global transcultural Diabetes Nutrition Algorithm (tDNA). Dr. Hamdy long-term work on diabetes technology including AID, CGMs, and AI ranked him the world’s 3rd most cited physician on diabetes technology.

Dr. Hamdy joined Joslin Diabetes Center in 1998, where he founded the obesity clinical program and restructured the inpatient diabetes program.  Dr. Hamdy won the 2015 Michaela Modan Award of the American Diabetes Association for his research on long-term diabetes weight management. He was given the Compassionate Caregiver Award of the Kenneth Schwartz Center. Dr. Hamdy has more than 150 peer-reviewed original articles, reviews, and book chapters. He is also the author of the Harvard Health Publication “The Diabetes Breakthrough” reversing diabetes through weight management. He is on the editorial review board of many medical journals 2 times section editor of Nutrients and Current Diabetes Report and also associate editor of Frontiers in Nutrition.